<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <meta name="keywords" content="HTML, CSS, XML, XHTML, JavaScript">
        <meta name="description" content="Test on HTML and CSS">
        <meta name="author" content="Huoty">
        <meta http-equiv="refresh" content="30">
        <title>Web 设计</title>
        <link rel="shortcut icon" href="/mylogo/logo_k_icon_72.ico" type="image/x-icon" />
       <script>
 var a = 1;
 
 function demo()
 {
 	var a = 3;
 	document.write(a + '<br>');
 	document.write(window.a + '<br>');	
 }
 
 demo();
 document.write(a);
        </script>
    </head>
    <body>
  
    </body>
</html> 

